High 7.3Published May 3, 2026

CVE-2026-7723PrefectHQ prefect WebSocket Endpoint in missing authentication

Updated under an hour ago (Oct 26, 2026, 3:50 AM ET)

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Every CVE for PrefectHQ prefect

Exploited in the last 30 days

A flaw has been found in PrefectHQ prefect up to 3.6.13. Affected is an unknown function of the file /api/events/in of the component WebSocket Endpoint. Executing a manipulation can lead to missing authentication. The attack may be performed from remote. The exploit has been published and may be used. Upgrading to version 3.6.14 is able to address this issue. This patch is called f8afecadf88ea5f73694dafa3a365b9d8fae1ad6. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS: 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
Weakness (CWE): CWE-306, CWE-287
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: May 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

PrefectHQ prefect prefect:prefect	3.6.0; 3.6.1; 3.6.2; 3.6.3; 3.6.4; 3.6.5; 3.6.6; 3.6.7; and 7 more ranges	CNA record

References

https://vuldb.com/vuln/360899vdb-entry
https://vuldb.com/vuln/360899/ctisignature, permissions-required
https://vuldb.com/submit/807256third-party-advisory
https://gist.github.com/nedlir/f1ab8aa038aafbcc6beeef21fab1d74fexploit
https://github.com/PrefectHQ/prefect/pull/20372issue-tracking, patch
https://github.com/PrefectHQ/prefect/commit/f8afecadf88ea5f73694dafa3a365b9d8fae1ad6patch
https://github.com/PrefectHQ/prefect/releases/tag/3.6.14patch
https://github.com/PrefectHQ/prefect/product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.